public RelayTaskCommandTest()
 {
     _Execute          = Substitute.For <Func <Task> >();
     _RelayTaskCommand = new RelayTaskCommand(_Execute);
 }
 public RelayTaskCommandGenericTest()
 {
     _Execute          = Substitute.For <Func <string, Task> >();
     _RelayTaskCommand = new RelayTaskCommand <string>(_Execute);
 }